*** This bug is a duplicate of bug 922906 ***
https://bugs.launchpad.net/bugs/922906
same crash on Ubuntu 12.10 beta1...
Sep 13 14:39:57 linux-pc kernel: [ 3777.475094] BUG: Bad page state in process
kswapd0 pfn:01698
Sep 13 14:39:57 linux-pc kernel: [ 3777.475106] page:ffffea000005a600 count:0
mapcount:-1 mapping:ffff88009a4f4568 index:0x20a01d
Sep 13 14:39:57 linux-pc kernel: [ 3777.475109] page flags: 0x100000000000000()
Sep 13 14:39:57 linux-pc kernel: [ 3777.475113] Modules linked in: sky2 bnep
rfcomm bluetooth ext2 snd_hda_codec_hdmi ppdev microcode snd_hda_codec_realtek
snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi
serio_raw snd_seq_midi_event snd_seq lpc_ich snd_timer snd_seq_device radeon
parport_pc asus_atk0110 snd ttm drm_kms_helper drm mac_hid soundcore
i2c_algo_bit snd_page_alloc lp parport hid_generic usbhid hid [last unloaded:
sky2]
Sep 13 14:39:57 linux-pc kernel: [ 3777.475171] Pid: 27, comm: kswapd0 Tainted:
G B 3.5.0-14-generic #16-Ubuntu
Sep 13 14:39:57 linux-pc kernel: [ 3777.475175] Call Trace:
Sep 13 14:39:57 linux-pc kernel: [ 3777.475191] [<ffffffff816766cc>]
bad_page+0xe6/0xfb
Sep 13 14:39:57 linux-pc kernel: [ 3777.475201] [<ffffffff8112acd4>]
free_pages_prepare+0x104/0x110
Sep 13 14:39:57 linux-pc kernel: [ 3777.475208] [<ffffffff8112ae37>]
free_hot_cold_page+0x47/0x1c0
Sep 13 14:39:57 linux-pc kernel: [ 3777.475216] [<ffffffff81134f5c>] ?
putback_inactive_pages+0x14c/0x2f0
Sep 13 14:39:57 linux-pc kernel: [ 3777.475222] [<ffffffff8112b1fe>]
free_hot_cold_page_list+0x4e/0xa0
Sep 13 14:39:57 linux-pc kernel: [ 3777.475229] [<ffffffff811352af>]
shrink_inactive_list+0x1af/0x400
Sep 13 14:39:57 linux-pc kernel: [ 3777.475236] [<ffffffff81135cb1>]
shrink_lruvec+0x3e1/0x580
Sep 13 14:39:57 linux-pc kernel: [ 3777.475243] [<ffffffff81135ec5>]
shrink_zone+0x75/0xa0
Sep 13 14:39:57 linux-pc kernel: [ 3777.475250] [<ffffffff81137064>]
balance_pgdat+0x5a4/0x760
Sep 13 14:39:57 linux-pc kernel: [ 3777.475258] [<ffffffff8101257b>] ?
__switch_to+0x12b/0x420
Sep 13 14:39:57 linux-pc kernel: [ 3777.475266] [<ffffffff8113738a>]
kswapd+0x16a/0x3c0
Sep 13 14:39:57 linux-pc kernel: [ 3777.475274] [<ffffffff810767e0>] ?
finish_wait+0x80/0x80
Sep 13 14:39:57 linux-pc kernel: [ 3777.475280] [<ffffffff81137220>] ?
balance_pgdat+0x760/0x760
Sep 13 14:39:57 linux-pc kernel: [ 3777.475287] [<ffffffff81076293>]
kthread+0x93/0xa0
Sep 13 14:39:57 linux-pc kernel: [ 3777.475296] [<ffffffff8168bd24>]
kernel_thread_helper+0x4/0x10
Sep 13 14:39:57 linux-pc kernel: [ 3777.475302] [<ffffffff81076200>] ?
flush_kthread_worker+0x80/0x80
Sep 13 14:39:57 linux-pc kernel: [ 3777.475308] [<ffffffff8168bd20>] ?
gs_change+0x13/0x13
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https://bugs.launchpad.net/bugs/1044576
Title:
Ubuntu 12.04.1 crash BUG: unable to handle kernel NULL pointer
dereference at (null)
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